Analysis and Estimation of the Field Strength of Digital Terrestrial Television Broadcasting

2021 ◽  
Vol 1 (1) ◽  
pp. 17-22
Author(s):  
G. Mihaylov ◽  
E. Ivanova
Keyword(s):  
Field Strength ◽  
Digital Television ◽  
Television Broadcasting ◽  
Digital Terrestrial Television ◽  
Almost All

DVB-T is the most widely used standard for digital television broadcast. With its introduction in 1997, it is used in more than 70 countries. Almost all of these countries adopted the new standard for digital terrestrial television broadcasting – DVB-T2. DVB-T2 is the best technology for digital television broadcasting, which offers better signal robustness, flexibility and more than 50% more efficiency, compared with other digital terrestrial television broadcast systems. This paper focuses on ways to deliver MPEG TS to transmitters and estimation of the field strength.

scholarly journals Interactive Digital Terrestrial Television: The Interoperability Challenge in Brazil

2009 ◽  
Vol 2009 ◽  
pp. 1-17 ◽  
Author(s):  
Jordi Amatller Clarasó ◽  
David Baldo ◽  
Giuliano Benelli ◽  
Giovanni Luca Daino ◽  
Riccardo Zambon
Keyword(s):  
System Architecture ◽  
Digital Television ◽  
Television Broadcasting ◽  
Innovative System ◽  
Interactive Services ◽  
Digital Terrestrial Television

This paper introduces different standards implemented in existing Digital Terrestrial Television Broadcasting systems to allow the fruition of interactive services and applications through digital Set Top Boxes. It focuses on the interoperability issue between the Brazilian and the European architectures. In fact, despite in Brazil the GEM specification has been designed to foster wide content compatibility across a range of interactive platforms, it has never come to a final implementation and deployment. As a result the interoperability issue has been deeply explored in the BEACON project and an innovative system architecture has been developed to deploy t-learning services across Europe and Brazil, providing integration of those systems that were not able to interoperate until nowadays. This work is an important step in the direction of standards' interoperability. As a result, MHP and Ginga NCL-Lua implementation appeared to be the very best choice to deliver interactive services in an interoperable mode between European and Brazilian digital television.

Digital Television Flexibility: A Survey of Australians with Disability

2014 ◽  
Vol 150 (1) ◽  
pp. 96-105 ◽  
Author(s):  
Katie Ellis
Keyword(s):  
Exploratory Study ◽  
Online Survey ◽  
Digital Technologies ◽  
Digital Television ◽  
Significant Group ◽  
Television Broadcasting ◽  
Lip Reading ◽  
Analogue Signals ◽  
Signing Avatars ◽  
First Time

Flexibility for many viewers comes from digital technologies and their interaction with television broadcasting. Significantly, as television is switched to digital transmissions, viewers with disability have the potential to experience flexibility in the form of accessibility features such as audio descriptions, captions, lip-reading avatars, signing avatars, spoken subtitles and clean audio. This flexibility may in fact provide some people with access to television for the first time. This exploratory study reports results from an online survey of Australians with disabilities conducted during the final months of the simulcast period before analogue signals were switched off in 2013. While captioning emerged as the most desired accessibility feature, differences surfaced when the data were broken into specific impairment types. This article highlights the importance of digital flexibility specific to impairment type, and locates people with disability as a significant group to consider as more changes take place around digital television broadcasting via the NBN.

Universal Access to Health Services Through the Digital Terrestrial Television

2013 ◽  
Vol 6 (1) ◽  
pp. 51-87 ◽  
Author(s):  
Aldo Franco Dragoni
Keyword(s):  
Health Services ◽  
Web Application ◽  
Universal Access ◽  
Western World ◽  
Digital Television ◽  
Local Health ◽  
Access To Health Services ◽  
Set Top Box ◽  
Digital Terrestrial Television ◽  
The Masses

The Western World has almost completed the transition toward the Digital Television (DTV), and in particular toward the Digital Terrestrial Television (DTT). In every home there is at least one decoder for the DTT. Some of them have a modem, to connect to a telephonic return line, and a Smart Card reader, both required by the “Pay TV” channels. Since those readers are compatible with the Governmental Smart Cards, a new access for the masses to secure and confidential digital services is nowadays available in our Information Society. “T-Government” defines the set of services provided by Governments or private entities via DTT. “Multimedia Home Platform” is the standard for DTT applications. A Local Health will be no more justified for offering services only through the Web disregarding both the broadcast and the return channels of the DTT since by doing so it would contribute to deepen the “digital divide” between skilled (young) people and unskilled (elder) people. The author defines a scenario for providing such T-Health Services both for patients (T-monitoring health parameters) and healthy citizens. These latter will have a bunch of services over DTT, not only informative or interactive applications on the Set top Box, but also transactional services through the secure return channel. However, much effort has to be spent to guarantee the usability of that new interface which is quite different from that of a Web application. The author designed, tested and redesigned a suite of DTT applications as a “proof of concept” to show the potential of this new platform for health information services. DTT may represent a real contribution to bring social healthcare and wellness.

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